Global Patent Index - EP 3318428 A1

EP 3318428 A1 20180509 - ON-WHEEL AIR MAINTENANCE SYSTEM

Title (en)

ON-WHEEL AIR MAINTENANCE SYSTEM

Title (de)

PNEUMATISCHES WARTUNGSSYSTEM AUF RÄDERN

Title (fr)

SYSTÈME DE MAINTENANCE D'AIR SUR ROUE

Publication

EP 3318428 A1 20180509 (EN)

Application

EP 16197647 A 20161108

Priority

EP 16197647 A 20161108

Abstract (en)

An air maintenance system and method for maintaining optimal air pressure in a rotating pneumatic tire is disclosed. The method comprises the steps of securing an axially inner ring (31, 32) to a vehicle wheel or rim (22); rotating the vehicle wheel or rim (22); maintaining an axially outer ring (81, 82) at a constant angular position relative to a ground surface by means of a stationary mass (84); and preferably linearly reciprocating a piston (41) relative to a cylinder (42) secured to the vehicle wheel or rim (22) by means of a cam groove (88) on an outer surface of the axially outer ring (81, 82). The system has a rotatable axially inner ring (31, 32) secured to a vehicle wheel or rim (22); a stationary axially outer ring (81, 82) maintaining a constant angular position relative to a ground surface; a stationary mass (84) secured the stationary axially outer ring (81, 82); a cylinder (42) secured to the rotatable axially inner ring (31, 32); and a piston (41) secured to the cylinder (42) for a preferably linear motion relative to the cylinder (42) and the rotatable axially inner ring (31, 32).

IPC 8 full level

B60C 23/12 (2006.01)

CPC (source: EP US)

B60C 23/126 (2020.05 - EP US); B60C 23/137 (2020.05 - EP US)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3318428 A1 20180509

DOCDB simple family (application)

EP 16197647 A 20161108